he's already been read his miranda rights by the fbi. but if he does have some sort of a political issue, some sort of a grudge that he wants people to know about, he may feel it's in his best interest to talk and that is certainly what law enforcement is hoping. they still want to find out are there other suspects, are there people who were accomplices in one way or another, either at helping to plan the bombing, helping plan the subsequent activities, helping plan the manufacture of this device. they want to know why these people did this and more importantly, how they went about doing it, any other people of foreign or domestic, they were in contact with and if he starts to talk, that will obviously help the investigation tremendously. >> anderson, you've done a great job today. thank you very much for now. i want to turn to cnn's brian todd in watertown, who shot exclusive video of the boat while the bombing suspect was still inside it. brian, a quite dramatic end game here to what has been an appalling few days for the people of wat